It's very easy and plug and play. It's not some crappy bluetooth-to-radio dongle that sounds like crap.

Blue tooth Car Adapter YT-BTA, Blue tooth Car Adapter YT-BTA direct from Guangzhou Yatour Electronics Technology Co., Ltd. in CN

It's the YT-BTA-BM4 with the 3 + 6 pin adapter.


For the price of circa $80ish, this is the best bang for buck I found that works with steerwheel controls....that I found. There might be better. But I think this is the best.

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2003 BMW X5 3.0i -- MT5, 3.64s final gears, H&R lowering springs, K-Mac bushing kit
2007 BMW X3 3.0Si -- MT6